通过现场跟踪测试和生产实践发现武钢1700冷连轧机组 “酸轧联机”改造工程中存在常规凸度辊形配置方案不合理，由此引起了薄规格轧制的工作辊“压肩”现象和轧制过程欠稳定导致成品板形质量欠佳等问题。采用二维变厚度有限元方法建立辊系弹性变形仿真模型，研制了酸轧联机条件下的VCR变接触支承辊，经过工业轧机现场轧制已成功投入1700冷连轧机实际应用。现场应用表明：改善了轧机板形调控性能，提高了带钢板形质量，增强了薄规格品种轧制能力，支承辊辊形自保持性较好 。
The configuration of conventional backup and work rolls for revamped 1700 tandem cold rolling mill at WISCO was proved unreasonable by systematical test as the cause of work roll edges contact during thin strip rolling and unsatisfactory flatness of product. A 2dimensional varying thickness finite element model of roll system deformation was built to simulate and analyse rolling process, and then a VCR (varying contact backup roll) was designed for the rolling conditions of PLTCM (pickling line combined with tandem cold rolling mill) and has been applied to 1700 tandem cold rolling mill at WISCO after industrial test. The application of VCR improves shape control,giving better strip flatness, higher capacity for thin strip and better selfmaintenance of roll contours.
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